{"id":5,"date":"2021-12-01T15:25:13","date_gmt":"2021-12-01T20:25:13","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/?p=5"},"modified":"2022-08-15T13:12:05","modified_gmt":"2022-08-15T17:12:05","slug":"chapter-1","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/chapter\/chapter-1\/","title":{"raw":"Straight Duct-No Seams","rendered":"Straight Duct-No Seams"},"content":{"raw":"&nbsp;\r\n<ol>\r\n \t<li>[embed]https:\/\/youtu.be\/0gRnhDEcBcU[\/embed]\r\n\r\nStudy the shop drawing. Remember that the first number for the duct size is always what we \u201csee in the view\u201d. The second number is the depth, or hidden view<img class=\"alignnone size-full wp-image-61\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/3.1-Straight-Duct-No-Seams-Drawing.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\r\n \t<li>Calculate the blank size. On the drawing, the length is given as 10\u201d and will be one of the blank size dimensions. The second dimension comes from the perimeter of the duct. In our case, the duct is 4\u201d x 6\u201d. So, 4\u201d+6\u201d+4\u201d+6\u201d= 20\u201d. So our blank is 20\u201d x 10\u201d\r\n<img class=\"alignnone size-full wp-image-67\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/3.2-Straight-Duct-No-Seams-Calculate-Blank.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\r\n \t<li>Draw the blank size out. In the shop we would be shearing the piece of metal\r\n<img class=\"alignnone size-full wp-image-63\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/3.3-Straight-Duct-No-Seams-Draw-Blank.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\r\n \t<li>Draw an arrow indicating the direction of air flow<img class=\"alignnone size-full wp-image-68\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/3.4-Straight-Duct-No-Seams-Airflow.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\r\n \t<li>Working from one side, mark off the perimeter at each end<img class=\"alignnone size-full wp-image-69\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/3.5-Straight-Duct-No-Seams-Mark-Perimeter.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\r\n \t<li>Connect the points at each end to create the line<img class=\"alignnone size-full wp-image-70\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/3.6-Straight-Duct-No-Seams-Connect_Create-Lines.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\r\n<\/ol>","rendered":"<p>&nbsp;<\/p>\n<ol>\n<li><iframe loading=\"lazy\" id=\"oembed-1\" title=\"Rectangular Duct\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/0gRnhDEcBcU?feature=oembed&#38;rel=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe>\n<p>Study the shop drawing. Remember that the first number for the duct size is always what we \u201csee in the view\u201d. The second number is the depth, or hidden view<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-61\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/3.1-Straight-Duct-No-Seams-Drawing.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\n<li>Calculate the blank size. On the drawing, the length is given as 10\u201d and will be one of the blank size dimensions. The second dimension comes from the perimeter of the duct. In our case, the duct is 4\u201d x 6\u201d. So, 4\u201d+6\u201d+4\u201d+6\u201d= 20\u201d. So our blank is 20\u201d x 10\u201d<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-67\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/3.2-Straight-Duct-No-Seams-Calculate-Blank.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\n<li>Draw the blank size out. In the shop we would be shearing the piece of metal<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-63\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/3.3-Straight-Duct-No-Seams-Draw-Blank.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\n<li>Draw an arrow indicating the direction of air flow<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-68\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/3.4-Straight-Duct-No-Seams-Airflow.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\n<li>Working from one side, mark off the perimeter at each end<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-69\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/3.5-Straight-Duct-No-Seams-Mark-Perimeter.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\n<li>Connect the points at each end to create the line<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-70\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/3.6-Straight-Duct-No-Seams-Connect_Create-Lines.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\n<\/ol>\n","protected":false},"author":1078,"menu_order":1,"template":"","meta":{"pb_show_title":"","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[48],"contributor":[],"license":[],"class_list":["post-5","chapter","type-chapter","status-publish","hentry","chapter-type-standard"],"part":3,"_links":{"self":[{"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/chapters\/5","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/wp\/v2\/users\/1078"}],"version-history":[{"count":7,"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/chapters\/5\/revisions"}],"predecessor-version":[{"id":82,"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/chapters\/5\/revisions\/82"}],"part":[{"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/parts\/3"}],"metadata":[{"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/chapters\/5\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/wp\/v2\/media?parent=5"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/chapter-type?post=5"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/wp\/v2\/contributor?post=5"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/wp\/v2\/license?post=5"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}